From 9da53df457f85a803e1a6645cab40c77581566e5 Mon Sep 17 00:00:00 2001
From: Ben Noordhuis <info@bnoordhuis.nl>
Date: Fri, 21 Oct 2011 14:13:28 -0700
Subject: [PATCH] unix: fix uv_freeaddrinfo() segfault on sunos

The system freeaddrinfo() on SunOS does not handle NULL values graciously.
---
 src/unix/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/unix/core.c b/src/unix/core.c
index c834aaae..27e949e9 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -667,7 +667,8 @@ int uv_getaddrinfo(uv_loop_t* loop,
 
 
 void uv_freeaddrinfo(struct addrinfo* ai) {
-  freeaddrinfo(ai);
+  if (ai)
+    freeaddrinfo(ai);
 }